Air hammer



FIG. 1 is a perspective view of an air hammer showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view thereof when in use.

The broken circles shown in FIG. 4 and the broken lines shown in FIG. 8 are provided for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for an air hammer, as shown and described. 